I left out the following statements. Thank you, Writeacher.
1) He believes that many adults censor the television because they fear losing (is "to lose" wrong?) control over their children.
2) He makes advances to her but his social rank hinders him from proposing marriage to her.
3) He intercepts her letters to her parents.
He justifies his behaviour by saying that he didn't want to do her any harm.
4) Some pupils haven't received any emails from their partners yet. Could you spur (urge) them to answer?
1. "losing" is correct - "to lose" is incorrect in this phrasing
2. comma needed
3. OK
4. OK